PSY 1001 1st Edition Lecture 6 Outline of Last Lecture I Cells of the Brain II Neuronal Communication a Anatomy of a neuron B Electrical activity of neurons C Synaptic transmission Outline of Current Lecture I Chemical Transmission as the Synapse a Glutamate b GABA c Serotonin d Dopamine Motivation I Definition and Phenomena II A Basic Model for Motivation a Thermoregulation b Feeding and Hunger Current Lecture These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute I Chemical Transmission as the Synapse a Glutamate i Excitatory neurotransmitter ii Involved in learning and plasticity b GABA i Inhibitory neurotransmitter ii Involved in anxiety disorder c Serotonin i Concentrated in hypothalamus and cortex ii Involved in sleep and arousal iii Involved in depression iv LSD effects serotonin system d Dopamine i Concentrated in basal ganglia and frontal lobes ii Parkinson s disease iii Schizophrenia iv Involved in some drug addiction reinforcement Motivation I Definition and Phenomena a Motivation a motive initiates behavior and gives it a direction a goal b Maslow s Hierarchy of Needs i Pyramid of needs ranging from physiological needs to self fulfillment needs c Drives i Motivation refers to many factors some inside the person some outside 1 An internal state that causes an individual to behave toward some goal ii Drive reduction theory 1 Theory proposing the certain drives motive us to act in ways that minimize aversive states a Homeostasis level balance coming to an equilibrium b Homeostatic control process is any system that works actively to maintain homeostasis II A Basic Model for Motivation a Thermoregulation temperature regulation i What initiates these behaviors 1 The hypothalamus 2 Thermoreceptors neurons that respond to temperature b Feeding and Hunger i Dual center theory 1 Hunger center a Lesion to the lateral hypothalamus rat does not eat i Lateral hypothalamus raises set point 2 Satiety full center a Lesion to the ventromedial hypothalamus rat overeats i Ventromedial hypothalamus lowers set point